新離散化モデルによる氷盤の曲げ崩壊シミュレーション

概要

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Basing on the experimental evidence, one of the authors has proposed new discrete models which consist of rigid elements connected by two types of spring system distributed over the inter-element boundaries. In this paper it is shown that these models can be derived from direct discretization of the law of momentum conservation and results of the collapse analysis of plate bending problems are given. After verification of the proposed method by analyses of several simple problems, results of computer simulation on the bending collapse of ice plates are reported. It is concluded from the results of simulation obtained that crack patterns as well as collapse loads are fairly in good agreement with experimental results, and it is hoped to establish a practical method of estimating the collapse load of ice plates by using these simple models in near future.
社団法人日本船舶海洋工学会の論文